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Dental porcelain paste

一种牙科、着色材料的技术，应用在牙科、牙科假体、牙科制剂等方向，能够解决难以均匀涂布、不能实现、气泡等问题，达到防止碳化、抑制气泡的产生、优异涂布性的效果

Pending Publication Date: 2020-07-31
SHOFU INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, in this technique, carbonization and air bubbles cannot be completely burned out during firing.
In addition, it is difficult to apply evenly
[0012] In any prior art, it is impossible to suppress carbonization and air bubbles caused by burning residues of organic components and polymer components during firing while maintaining a paste state with excellent applicability for a long period of time.

Method used

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  • Dental porcelain paste
  • Dental porcelain paste
  • Dental porcelain paste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～22、 comparative example 1～16

[0087] Each composition that embodiment, comparative example use:

[0088] Glass powder made of SiO 2 、Al 2 o 3 、K 2 Composed of O and other components, potassium aluminosilicate glass with a softening point (Ts) of 575°C was used and pulverized by a common pulverizer to produce glass powders with an average particle size of 0.5 μm, 1 μm, 5 μm, 20 μm, and 26 μm. use.

[0089] As for hydrophobized fine particle silica and hydrophilic fine particle silica, RX50, R974, R812, #50, #200, #300 (manufactured by Japan Aerosil Corporation (Nippon Aerosil Corporation), YA050C, YA100C (manufactured by Admatechs Co., Ltd.) (Admatex Co., Ltd.)).

[0090] As organic solvents, ethanol (bp=89°C), propylene glycol (bp=188.2°C), 1,3-butanediol (bp=204°C), and benzyl benzoate (bp=324°C) were used.

[0091] [Table 1]

[0092]

[0093] [Table 2]

[0094]

[0095] [table 3]

[0096]

[0097] In all the examples, excellent applicability was exhibited, and transparency was also exhi...

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PUM

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Abstract

Provided is a dental ceramic paste which is capable of maintaining a paste state over a long period of time, has excellent coatability, and hardly causes carbonization and air bubbles due to the influence of an organic component or a polymer component during firing. The dental ceramic paste according to the present invention is used in the production of a dental prosthetic device, and is characterized by comprising: 50.0-80.0 wt% of a glass powder (a) having a maximum particle diameter of 100 [mu] m or less and an average particle diameter of 1-20 [mu] m; 0.5 wt% to 10.0 wt% of hydrophobized particulate silica (b) having an average primary particle diameter of 1 nm to 50 nm; and 10.0 wt% to 49.5 wt% of an organic solvent (c) having a boiling point (bp) of 100 DEG C to 300 DEG C.

Description

technical field [0001] The present invention relates to a dental ceramic paste which is used for dental prosthetic devices such as artificial teeth, and which is a dental ceramic or dental ceramic suitable for use when constructing ceramics manually by a dental technician. Make a paste with coloring materials. Background technique [0002] Dental ceramics (porcelain) are glass-ceramic materials made of feldspar and the like as raw materials, and are mainly used for crown restoration of missing teeth. When classified according to the method of use, there are ceramics for metal bonding fired on metal frames, ceramics for zirconia fired on frames made of zirconia, and prosthetic devices made of ceramics for dentistry alone. [0003] In addition, the coloring material for dental ceramics is the same as the ceramic material for dental use, and is based on a glass material or a glass ceramic material, and various coloring material components (pigments) are compounded. Components...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/20A61K6/802A61K6/836
CPCA61K6/17A61K6/836A61K6/16A61K6/78A61K6/818A61K6/816A61K6/833C04B33/24C04B33/14C04B33/1305C04B33/131C04B33/025C04B2235/36C04B2235/3418C04B2235/5436C04B2235/5445C04B2235/549C03C4/0021C03C2201/60C03C12/00C03C3/083A61C13/083A61C13/082A61K6/65A61K6/853A61K6/76C03C8/16C03C8/14C03C2214/04C03C14/004C03C2205/06C03C2204/00C03C1/04C04B2235/5454C04B2235/9646
Inventor 河田圭太河野显志
Owner SHOFU INC
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